Sealey Step Ladder 7-Tread Aluminium - BS EN 131. EN 131 Certified with 150kg capacity. Durable lightweight anodised aluminium alloy frame. 80mm Deep non-slip steps and 250mm wide platform with safety rail allow plenty of legroom for safe standing. Ribbed feet give full floor contact for extra stability. Specifications: Base Width: 520mm, Maximum Capacity: 150kg, Maximum Length in Use: 2080mm, Maximum Reach Height: 3230mm, Maximum Standing Height: 1480mm, Nett Weight: 7.3kg, Treads: 7. Model No. ASL7.